HARLEY-DAVIDSON Hummer
| Production Year: | 1955, 1956, 1957, 1958, 1959 |  |
| Type: | Air-cooled, two-stroke, single cylinder |
| engine specs | |
| Type | Air-cooled, two-stroke, single cylinder |
| Displacement | 125 cm3 |
| Bore X Stroke | 2.0x2.3 in OR 51 mm |
| Compression Ratio | 6.6:1 |
| Fuel System | Carburetor |
| transmission specs | |
| Gearbox | 3-Speed, manual |
| Clutch | Wet multi disc |
| Final Drive | Chain |
| chassis specs | |
| Frame | Steel |
| Front Suspension | Telescopic fork |
| Rear Suspension | Hhardtail, spring-mounted seat |
| Front Brake | Drum |
| Rear Brake | Drum |
| dimension specs | |
| Weelbase | 50 in OR 1270 mm |
| Weight | 170 lbs OR 77 kg |
| Fuel Capacity | 1.75 gallons OR 6.6 L |
| Wheelbase | 50 in OR 1270 mm |
| tyres specs | |
| Front | 3.25x19 |
| Rear | 3.25x19 |
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